[mrtg] Re: Slowly incrementing Value

[JACOB STEENHAGEN]

The perminute option helped, I guess I was a little off in what I thought
was happening.  time_elapsed seems to be number_of_seconds and I thought it
was number_of_minutes.  After putting perminute in my options, I watched a
counter that increments a little faster than the IMC (Exchange total
messages).  I observed a difference of 11 and MRTG recorded a difference of
2 (~ 11 / 5).  My IMC counter incremented by 2, but MRTG still recorded 0
(2/5 still rounds down to 0).  So I'm closer, but not there yet :)

-----Original Message-----
From: Paul C. Williamson [mailto:pwilliamson at mandtbank.com]
Sent: Tuesday, January 29, 2002 2:20 PM
To: jsteenhagen at acutex.net; mrtg at list.ee.ethz.ch
Subject: [mrtg] Re: Slowly incrementing Value



Have you tried the perminute option?  That sounds like it may be for you...

Paul
>>> JACOB STEENHAGEN <jsteenhagen at acutex.net> 01/29/02 02:08PM >>>
General Information:
 
I'm trying to use MRTG to graph a counter that slowly increments, but I only
want the change from last time, not what the 'gauge' option gives.  From
what I've seen in the docs, it appears that when MRTG is set to graph in
this manner (which it seems to be by default and is the way that it handles
routers, etc) it uses something like the following formula:
 
(current_value - last_value) / time_elapsed
 
But my problem is that my counter increments quite slowly.  In the 5 minutes
in-between readings, it may only increment by 1, which causes MRTG to read
it as 1/5.  It appears that when MRTG reads a value this small, it doesn't
record it.  I really want this to be recorded as 1, however.
 
 
What I'm specifically trying:
 
I have a Microsoft Exchange Server that I'm trying to monitor via SNMP and
MRTG.  The Internet Mail Connector keeps simple Incoming/Outgoing counters
(among other things), but as mentioned above, these don't increment at a
fast pace.  Following is the config options I'm trying to use:
 
-------- BEGIN PASTE ---------
Target[199.248.189.5_imc]:
1.3.6.1.4.1.311.1.1.3.1.1.22.20.0&1.3.6.1.4.1.311.1.1.3.1.1.22.21.0:xxx at 199.
248.189.5
MaxBytes[199.248.189.5_imc]: 5000
Options[199.248.189.5_imc]: growright
ShortLegend[199.248.189.5_imc]: Msgs.
YLegend[199.248.189.5_imc]: Messages
Legend1[199.248.189.5_imc]: Incoming Internet Messages
Legend2[199.248.189.5_imc]: Outgoing Internet Messages
LegendI[199.248.189.5_imc]: In: 
LegendO[199.248.189.5_imc]: Out: 
Title[199.248.189.5_imc]: Internet e-mail for Acutex Exchange Server --
EXCHANGE3
PageTop[199.248.189.5_imc]: <H1>Internet e-mail for Acutex Exchange Server
-- EXCHANGE3</H1>
 <TABLE>
   <TR><TD>System:</TD>     <TD>EXCHANGE3 in ACUTEX</TD></TR>
   <TR><TD>Maintainer:</TD> <TD>Jacob Steenhagen</TD></TR>
   <TR><TD>Ip:</TD>         <TD>199.248.189.5 (exchange3)</TD></TR>
 </TABLE>

 
-------- END PASTE ---------
 
But it doesn't seem to record anything but 0's. To make things even more
complicated, whenever the computer or service is restarted, the counters
restart at 0.  I'm not sure if this causes an issue or not, but thought I'd
mention it.
 


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